Home / 853,314.40-1,276,861.20-778,664.80

Finding the Fourth Proportional to 853,314.40, 1,276,861.20 and 778,664.80

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Solution

The fourth proportional to 853,314.40, 1,276,861.20 and 778,664.80 is: 1,165,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,314.40 : 1,276,861.20 = 778,664.80 : x
  2. Step 2: Convert to fraction form
    853,314.40/1,276,861.20 = 778,664.80/x
  3. Step 3: Cross multiply
    853,314.40x = 1,276,861.20 × 778,664.80
  4. Step 4: Simplify right side
    853,314.40x = 994,246,870,925.76
  5. Step 5: Solve for x
    x = 994,246,870,925.76/853,314.40
  6. Step 6: Final answer
    x = 1,165,158.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.